Engine air-to-fuel ratio control system

Details Engine air-to-fuel ratio control system Engine air-to-fuel ratio control system

1975-08-21

1978-04-18

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123119D, 123124B, F02M 2304

Patent

active

040845605

ABSTRACT:
A system for controlling an air-to-fuel ratio of a gas mixture supplied to a vehicle engine to a correct valve is disclosed. In response to an output signal from a discriminator circuit which receives as inputs thereto a signal from an air-to-fuel ratio detector mounted in an exhaust pipe and simultaneously in response to a signal from an aperture detector which detects the aperture of a control valve mounted in an adjusting air path provided parallel to a carburetor, a pulse motor for adjusting the aperture of the control valve provided in said air path is driven to obtain a correct air-to-fuel ratio.

REFERENCES:
patent: 3721222 (1973-03-01), Shioya et al.
patent: 3738341 (1973-06-01), Loos
patent: 3745768 (1973-07-01), Zechnall et al.
patent: 3759232 (1973-09-01), Wahl et al.
patent: 3921612 (1975-11-01), Aono
patent: 3970052 (1976-07-01), Andoh

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